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Full text of "Alaskan glacier studies of the National Geographic Society in the Yakutat Bay, Prince William Sound and lower Copper River regions"

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PLATE CXLVI
MAP OF LOTTKK POBT FTDAIXSO (BASED ON SOUNDINGS BY U. S. COAST AND GEODETIC SUBVHT)
Showing the trough produced by glacial erosion below sea level; and the U-shaped, submerged hanging valleys.   Submerged contour
interval, 100 feet